OCCUPATIONAL EXPOSURE DUE TO NATURALLY OCCURRING RADIONUCLIDE MATERIAL IN GRANITE QUARRY INDUSTRY

被引：7

作者：

Ademola, J. A. ^{[1
]}

机构：

[1] Univ Ibadan, Dept Phys, Ibadan, Nigeria

来源：

RADIATION PROTECTION DOSIMETRY | 2012年 / 148卷 / 03期

关键词：

DECAY SERIES RADIONUCLIDES; RADIOLOGICAL IMPACT; RADIOACTIVITY;

D O I：

10.1093/rpd/ncr034

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The potential occupational exposure in granite quarry industry due to the presence of naturally occurring radioactive material (NORM) has been investigated. The activity concentrations of K-40, Ra-226 and Th-232 were determined using gamma-ray spectroscopy method. The annual effective dose of workers through different exposure pathways was determined by model calculations. The total annual effective dose varied from 21.48 to 33.69 mu Sv y(-1). Inhalation dose contributes the highest to the total effective dose. The results obtained were much lower than the intervention exemption levels (1.0 mSv y(-1)) given in the International Commission on Radiological Protection Publication 82.

引用

页码：297 / 300

页数：4

共 19 条

[1] Exposure to high background radiation level in the tin mining area of Jos Plateau, Nigeria [J].